//
// execution/detail/void_receiver.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2022 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

#ifndef ASIO_EXECUTION_DETAIL_VOID_RECEIVER_HPP
#define ASIO_EXECUTION_DETAIL_VOID_RECEIVER_HPP

#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)

#include "asio/detail/config.hpp"
#include "asio/traits/set_done_member.hpp"
#include "asio/traits/set_error_member.hpp"
#include "asio/traits/set_value_member.hpp"

#include "asio/detail/push_options.hpp"

namespace asio {
    namespace execution {
        namespace detail {

            struct void_receiver {
                void set_value()

                ASIO_NOEXCEPT
                {
                }

                template<typename E>
                void set_error(ASIO_MOVE_ARG(E))

                ASIO_NOEXCEPT
                {
                }

                void set_done()

                ASIO_NOEXCEPT
                {
                }
            };

        } // namespace detail
    } // namespace execution
    namespace traits {

#if !defined(ASIO_HAS_DEDUCED_SET_VALUE_MEMBER_TRAIT)

        template<>
        struct set_value_member<asio::execution::detail::void_receiver, void()> {
            ASIO_STATIC_CONSTEXPR(bool, is_valid = true);

            ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);

            typedef void result_type;
        };

#endif // !defined(ASIO_HAS_DEDUCED_SET_VALUE_MEMBER_TRAIT)

#if !defined(ASIO_HAS_DEDUCED_SET_ERROR_MEMBER_TRAIT)

        template<typename E>
        struct set_error_member<asio::execution::detail::void_receiver, E> {
            ASIO_STATIC_CONSTEXPR(bool, is_valid = true);

            ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);

            typedef void result_type;
        };

#endif // !defined(ASIO_HAS_DEDUCED_SET_ERROR_MEMBER_TRAIT)

#if !defined(ASIO_HAS_DEDUCED_SET_DONE_MEMBER_TRAIT)

        template<>
        struct set_done_member<asio::execution::detail::void_receiver> {
            ASIO_STATIC_CONSTEXPR(bool, is_valid = true);

            ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);

            typedef void result_type;
        };

#endif // !defined(ASIO_HAS_DEDUCED_SET_DONE_MEMBER_TRAIT)

    } // namespace traits
} // namespace asio

#include "asio/detail/pop_options.hpp"

#endif // ASIO_EXECUTION_DETAIL_VOID_RECEIVER_HPP
